Major objektive of my bachelor thesis was to design construction of a mobile wood chipper which is used to process the brushwood remaining after pruning trees in an efficient way. In the first part, which is called the theoretical part, I deal with the division of chippers, the principle of mechanism operation and their use. In the second part, which is practical, I deal with the design of a chipper as such. Work is based on calculations that justify selection of individual components; it also include spictures, production drawings and 3D chipper model itself designed in Solid Edge ST5 programme.